package com.boyue;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;
import org.springframework.cloud.netflix.ribbon.RibbonClients;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableEurekaClient
@EnableHystrix
//@EnableCircuitBreaker
public class RibbonWithHystrix {
// @EnableHystrix注解  开启Hystrix
//@EnableCircuitBreaker 开启熔断器
//@EnableHystrix与@EnableCircuitBreaker的区别
//@EnableHystrix继承了@EnableCricuitBreaker
    public static void main(String[] args) {
        SpringApplication.run(RibbonWithHystrix.class,args);
    }

//    向程序的ioc注入一个bean: restTemplate;
//     并通过@LoadBalanced注解表明这个restRemplate开启负载均衡的功能
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return  new RestTemplate();
    }
}
